Väitös energiatekniikan ja prosessitekniikan alalta, Arshe Said, M.Sc. (Eng.)
CO2 sequestration by steelmaking slags for the production of precipitated calcium carbonate - From laboratory to demonstration stage.
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Arshe Said, M.Sc. (Eng.) väittelee 12.5.2017 klo 12 Aalto-yliopiston insinööritieteiden korkeakoulussa, konetekniikan laitoksella, aiheesta CO2 sequestration by steelmaking slags for the production of precipitated calcium carbonate - From laboratory to demonstration stage. Väitöksen ala on energiatekniikka, prosessitekniikka.
From the beginning of the industrial revolution up to today, the so-called one-way or linear production model has dominated the entire manufacturing ecosystem. In this linear model, products are produced from primary raw materials, sold, used, and then discarded as waste. In consequence, this model has led to a domino effect for the entire human ecosystem including its economic, social, and political orientation and the environment. The so-called circular economy is considered to be the alternative to the linear production model.
Industrial solid waste, such as steelmaking slags, is considered to be an attractive raw material for CO2 sequestration due to its high content of calcium oxide. It has been reported that very large amounts of this material are being dumped into slag disposal areas without being utilized. This dissertation is to illustrate the feasibility of utilizing both steelmaking slags and CO2 in the flue gas from steelmaking processes as an alternative method for the production of precipitated calcium carbonate (PCC). The feasibility study was originally conducted at laboratory scale with a 0.5 L reactor, after that, we designed and constructed the world’s first pilot plant test facility that converts steel slag and CO2 into PCC.
Vastaväittäjät: Professori Timo Hyppänen, Lappeenrannan teknillinen yliopisto ja Dr. Uibu Mai , Tallinnan teknillinen yliopisto
Valvoja: Professori Mika Järvinen, Aalto-yliopiston insinööritieteiden korkeakoulu, konetekniikan laitos
Väitöskirjan verkko-osoite: http://urn.fi/URN:ISBN:978-952-60-7399-6
Väittelijän yhteystiedot:
Arshe Said, konetekniikan laitos
Puh. 050 571 8886, arshe.said@aalto.fi